[n] system consisting of the parts of an engine through which burned gases or steam are discharged
[n] gases ejected from an engine as waste products
[v] wear out completely; "This kind of work exhausts me"; "I'm beat"; "He was all washed up after the exam"
[v] create a vacuum in (a bulb, flask, reaction vessel, etc.)
[v] use up the whole supply of; "We have exhausted the food supplies"
[v] use up, as of resources or materials; "this car consumes a lot of gas"; "We exhausted our savings"; "They run through 20 bottles of wine a week"
[v] deplete; "exhaust one's savings"; "We quickly played out our strength"
beat, consume, deplete, eat, eat up, evacuate, exhaust fumes, exhaust system, fumes, play out, run down, run through, sap, tire, tucker, tucker out, use up, wash up, wipe out